Chatsufusa 
The Invincible Little Lady (Manga): Volume 2 

After waiting a lifetime and then some, Mary finally gets to try something she’s always wanted to do—go to school! She enters the storied Altolia Academy with her friends, where she lands a spot in the Solos class, whose students study the ways of combat. There, she meets a shy girl named Safina, and they become fast friends. However, it turns out that this could be Safina’s last year at the academy… She’s betrothed to an absolute cretin, and if he beats her in the upcoming martial arts tournament, she’ll have to drop out! Can Mary save her friend from this predicament? And can she do it without accidentally winning the whole thing and standing out even more? Join the invincible little lady and her friends on the next chapter of her adventure as the academy arc begins!